add https://git-wip-us.apache.org/repos/asf?p=accumulo.git;a=blob;f=test/src/main/java/org/apache/accumulo/test/mrit/IntegrationTestMapReduce.java;h=04d7dc79f7c7d8d7fd3531929dbb25ce4e47ada0;hb=HEAD#l47 to TESTING.md